well i bought the unit off of ebay and did not come with the mic. so it was only good for transfuring music to the unit. now i have look at some other mics out there and the only one i had was a mic from the xbox.
so i tried pluging it in to see if it works well i found that it does and now i am in good shape to use it. i have made most of my calls from it today. and i think i will try to find a better mic out there with the same jack and replace the xbox mic with it. so just a heads up for anyone with out a mic